Examples with ServletContextAttributeEvent javax.servlet.ServletContextAttributeEvent used on opensource projects

Example 1 with ServletContextAttributeEvent

use of javax.servlet.ServletContextAttributeEvent in project felix by apache.

the class ProxyServletContextListener method contextInitialized.

// ---------- ServletContextListener
@Override
public void contextInitialized(final ServletContextEvent sce) {
    this.servletContext = sce.getServletContext();
    // add all required listeners
    this.servletContext.addListener(new HttpSessionListener() {

        private HttpSessionListener getHttpSessionListener() {
            final EventDispatcherTracker tracker = eventDispatcherTracker;
            if (tracker != null) {
                return tracker.getHttpSessionListener();
            }
            return null;
        }

        @Override
        public void sessionCreated(final HttpSessionEvent se) {
            final HttpSessionListener sessionDispatcher = getHttpSessionListener();
            if (sessionDispatcher != null) {
                sessionDispatcher.sessionCreated(se);
            }
        }

        @Override
        public void sessionDestroyed(final HttpSessionEvent se) {
            final HttpSessionListener sessionDispatcher = getHttpSessionListener();
            if (sessionDispatcher != null) {
                sessionDispatcher.sessionDestroyed(se);
            }
        }
    });
    this.servletContext.addListener(new HttpSessionIdListener() {

        private HttpSessionIdListener getHttpSessionIdListener() {
            final EventDispatcherTracker tracker = eventDispatcherTracker;
            if (tracker != null) {
                return tracker.getHttpSessionIdListener();
            }
            return null;
        }

        @Override
        public void sessionIdChanged(final HttpSessionEvent event, final String oldSessionId) {
            final HttpSessionIdListener sessionIdDispatcher = getHttpSessionIdListener();
            if (sessionIdDispatcher != null) {
                sessionIdDispatcher.sessionIdChanged(event, oldSessionId);
            }
        }
    });
    this.servletContext.addListener(new HttpSessionAttributeListener() {

        private HttpSessionAttributeListener getHttpSessionAttributeListener() {
            final EventDispatcherTracker tracker = eventDispatcherTracker;
            if (tracker != null) {
                return tracker.getHttpSessionAttributeListener();
            }
            return null;
        }

        @Override
        public void attributeAdded(final HttpSessionBindingEvent se) {
            final HttpSessionAttributeListener attributeDispatcher = getHttpSessionAttributeListener();
            if (attributeDispatcher != null) {
                attributeDispatcher.attributeAdded(se);
            }
        }

        @Override
        public void attributeRemoved(final HttpSessionBindingEvent se) {
            final HttpSessionAttributeListener attributeDispatcher = getHttpSessionAttributeListener();
            if (attributeDispatcher != null) {
                attributeDispatcher.attributeRemoved(se);
            }
        }

        @Override
        public void attributeReplaced(final HttpSessionBindingEvent se) {
            final HttpSessionAttributeListener attributeDispatcher = getHttpSessionAttributeListener();
            if (attributeDispatcher != null) {
                attributeDispatcher.attributeReplaced(se);
            }
        }
    });
    this.servletContext.addListener(new ServletContextAttributeListener() {

        @Override
        public void attributeAdded(final ServletContextAttributeEvent event) {
            if (event.getName().equals(BundleContext.class.getName())) {
                startTracker(event.getValue());
            }
        }

        @Override
        public void attributeRemoved(final ServletContextAttributeEvent event) {
            if (event.getName().equals(BundleContext.class.getName())) {
                stopTracker();
            }
        }

        @Override
        public void attributeReplaced(final ServletContextAttributeEvent event) {
            if (event.getName().equals(BundleContext.class.getName())) {
                stopTracker();
                startTracker(event.getServletContext().getAttribute(event.getName()));
            }
        }
    });
}

Example 2 with ServletContextAttributeEvent

use of javax.servlet.ServletContextAttributeEvent in project tomcat70 by apache.

the class ApplicationContext method setAttribute.

/**
 * Bind the specified value with the specified context attribute name,
 * replacing any existing value for that name.
 *
 * @param name Attribute name to be bound
 * @param value New attribute value to be bound
 */
@Override
public void setAttribute(String name, Object value) {
    // Name cannot be null
    if (name == null)
        throw new IllegalArgumentException(sm.getString("applicationContext.setAttribute.namenull"));
    // Null value is the same as removeAttribute()
    if (value == null) {
        removeAttribute(name);
        return;
    }
    // Check for read only attribute
    if (readOnlyAttributes.containsKey(name))
        return;
    Object oldValue = attributes.put(name, value);
    boolean replaced = oldValue != null;
    // Notify interested application event listeners
    Object[] listeners = context.getApplicationEventListeners();
    if ((listeners == null) || (listeners.length == 0))
        return;
    ServletContextAttributeEvent event = null;
    if (replaced)
        event = new ServletContextAttributeEvent(context.getServletContext(), name, oldValue);
    else
        event = new ServletContextAttributeEvent(context.getServletContext(), name, value);
    for (int i = 0; i < listeners.length; i++) {
        if (!(listeners[i] instanceof ServletContextAttributeListener))
            continue;
        ServletContextAttributeListener listener = (ServletContextAttributeListener) listeners[i];
        try {
            if (replaced) {
                context.fireContainerEvent("beforeContextAttributeReplaced", listener);
                listener.attributeReplaced(event);
                context.fireContainerEvent("afterContextAttributeReplaced", listener);
            } else {
                context.fireContainerEvent("beforeContextAttributeAdded", listener);
                listener.attributeAdded(event);
                context.fireContainerEvent("afterContextAttributeAdded", listener);
            }
        } catch (Throwable t) {
            ExceptionUtils.handleThrowable(t);
            if (replaced)
                context.fireContainerEvent("afterContextAttributeReplaced", listener);
            else
                context.fireContainerEvent("afterContextAttributeAdded", listener);
            // FIXME - should we do anything besides log these?
            log(sm.getString("applicationContext.attributeEvent"), t);
        }
    }
}

Example 3 with ServletContextAttributeEvent

use of javax.servlet.ServletContextAttributeEvent in project opennms by OpenNMS.

the class ServletContextImpl method removeAttribute.

@Override
public void removeAttribute(String name) {
    Object oldValue;
    if (this.attributes != null) {
        oldValue = this.attributes.remove(name);
    } else {
        oldValue = this.context.getAttribute(name);
        this.context.removeAttribute(name);
    }
    if (oldValue != null) {
        attributeListener.attributeRemoved(new ServletContextAttributeEvent(this, name, oldValue));
    }
}

Example 4 with ServletContextAttributeEvent

use of javax.servlet.ServletContextAttributeEvent in project felix by apache.

the class ServletContextImpl method removeAttribute.

@Override
public void removeAttribute(String name) {
    Object oldValue;
    if (this.attributes != null) {
        oldValue = this.attributes.remove(name);
    } else {
        oldValue = this.context.getAttribute(name);
        this.context.removeAttribute(name);
    }
    if (oldValue != null) {
        this.handlerRegistry.getEventListenerRegistry().attributeRemoved(new ServletContextAttributeEvent(this, name, oldValue));
    }
}

Example 5 with ServletContextAttributeEvent

use of javax.servlet.ServletContextAttributeEvent in project tomcat70 by apache.

the class ApplicationContext method removeAttribute.

/**
 * Remove the context attribute with the specified name, if any.
 *
 * @param name Name of the context attribute to be removed
 */
@Override
public void removeAttribute(String name) {
    Object value = null;
    // Check for read only attribute
    if (readOnlyAttributes.containsKey(name)) {
        return;
    }
    value = attributes.remove(name);
    if (value == null) {
        return;
    }
    // Notify interested application event listeners
    Object[] listeners = context.getApplicationEventListeners();
    if ((listeners == null) || (listeners.length == 0))
        return;
    ServletContextAttributeEvent event = new ServletContextAttributeEvent(context.getServletContext(), name, value);
    for (int i = 0; i < listeners.length; i++) {
        if (!(listeners[i] instanceof ServletContextAttributeListener))
            continue;
        ServletContextAttributeListener listener = (ServletContextAttributeListener) listeners[i];
        try {
            context.fireContainerEvent("beforeContextAttributeRemoved", listener);
            listener.attributeRemoved(event);
            context.fireContainerEvent("afterContextAttributeRemoved", listener);
        } catch (Throwable t) {
            ExceptionUtils.handleThrowable(t);
            context.fireContainerEvent("afterContextAttributeRemoved", listener);
            // FIXME - should we do anything besides log these?
            log(sm.getString("applicationContext.attributeEvent"), t);
        }
    }
}